//
//  BWMainTabbar.swift
//  weibo
//
//  Created by libowen on 16/5/20.
//  Copyright © 2016年 libowen. All rights reserved.
//

import Foundation
import UIKit

class BWMainTabbar: UITabBar {
    override init(frame: CGRect) {
        super.init(frame: frame)
        addSubview(plusBtn)
    }

    required init?(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    
    override func layoutSubviews() {
        super.layoutSubviews()
        
        let w = self.bounds.width / 5
        let h = self.bounds.height
        let rect = CGRect(x: 0, y: 0, width: w, height: h)
        
        var index: CGFloat = 0
        
        for subView in subviews {
            if
         subView.isKindOfClass(NSClassFromString("UITabBarButton")!) {
//                   print(subView)
            subView.frame = CGRectOffset(rect, w * index, 0)
            
            index += (index == 1 ? 2 : 1)
            
            }
        }
        plusBtn.frame = CGRectOffset(rect, 2 * w, 0)
    }
    
    lazy var plusBtn: UIButton = {
        let btn = UIButton()
        
        btn.setImage(UIImage(named: "tabbar_compose_icon_add"), forState: .Normal)
        
        btn.setImage(UIImage(named: "tabbar_compose_icon_add_highlighted"), forState: .Highlighted)
        
        btn.setBackgroundImage(UIImage(named: "tabbar_compose_button"), forState: .Normal)
        
        btn.setBackgroundImage(UIImage(named: "tabbar_compose_button_highlighted"), forState: .Highlighted)
        return btn
    }()
}






















